I was reading this article about the theory of galactic bubbles (excuse my simplistic terminology)
[https://www.vice.com/en_in/article/4agbjn/we-actually-live-inside-a-huge-bubble-in-space-physicist-proposes](https://www.vice.com/en_in/article/4agbjn/we-actually-live-inside-a-huge-bubble-in-space-physicist-proposes)
I feel like I get it if I expel my understanding of space as a vacuum, but I was hoping someone here could explain to me how different regions of space could have different densities if, to my understanding, space is an absence of matter (totally ready to hear this understanding is wrong).
In: Physics
Space is not defined as the absence of matter, space is simply – well – the space in which all the galaxies, star systems etc. exist.
While this mass density of space is fairly homogeneous, that is: space has roughly the same amount of matter in in everywhere, there are some small variations. Some areas of space have more galaxies in it than others.
This is the variation of density the article is referring to.
Latest Answers